2 * Samsung S2MPS11 and S2MPS14 Voltage and Current Regulator
4 The Samsung S2MPS11 is a multi-function device which includes voltage and
5 current regulators, RTC, charger controller and other sub-blocks. It is
6 interfaced to the host controller using an I2C interface. Each sub-block is
7 addressed by the host system using different I2C slave addresses.
10 - compatible: Should be "samsung,s2mps11-pmic" or "samsung,s2mps14-pmic".
11 - reg: Specifies the I2C slave address of the pmic block. It should be 0x66.
14 - interrupt-parent: Specifies the phandle of the interrupt controller to which
15 the interrupts from s2mps11 are delivered to.
16 - interrupts: Interrupt specifiers for interrupt sources.
19 - clocks: s2mps11 and s5m8767 provide three(AP/CP/BT) buffered 32.768 KHz
20 outputs, so to register these as clocks with common clock framework
21 instantiate a sub-node named "clocks". It uses the common clock binding
23 [Documentation/devicetree/bindings/clock/clock-bindings.txt]
24 The s2mps14 provides two (AP/BT) buffered 32.768 KHz outputs.
25 - #clock-cells: should be 1.
27 - The following is the list of clocks generated by the controller. Each clock
28 is assigned an identifier and client nodes use this identifier to specify
29 the clock which they consume.
31 ----------------------------------------------------------
32 32KhzAP 0 S2MPS11, S2MPS14, S5M8767
33 32KhzCP 1 S2MPS11, S5M8767
34 32KhzBT 2 S2MPS11, S2MPS14, S5M8767
36 - compatible: Should be one of: "samsung,s2mps11-clk", "samsung,s2mps14-clk",
39 - regulators: The regulators of s2mps11 that have to be instantiated should be
40 included in a sub-node named 'regulators'. Regulator nodes included in this
41 sub-node should be of the format as listed below.
44 [standard regulator constraints....];
47 regulator-ramp-delay for BUCKs = [6250/12500/25000(default)/50000] uV/us
49 BUCK[2/3/4/6] supports disabling ramp delay on hardware, so explictly
50 regulator-ramp-delay = <0> can be used for them to disable ramp delay.
51 In the absence of the regulator-ramp-delay property, the default ramp
54 NOTE: Some BUCKs share the ramp rate setting i.e. same ramp value will be set
55 for a particular group of BUCKs. So provide same regulator-ramp-delay<value>.
56 Grouping of BUCKs sharing ramp rate setting is as follow : BUCK[1, 6],
57 BUCK[3, 4], and BUCK[7, 8, 10]
59 On S2MPS14 the LDO10, LDO11 and LDO12 can be configured to external control
60 over GPIO. To turn this feature on this property must be added to the regulator
62 - samsung,ext-control-gpios: GPIO specifier for one GPIO
63 controlling this regulator (enable/disable);
66 regulator-name = "V_EMMC_2.8V";
67 regulator-min-microvolt = <2800000>;
68 regulator-max-microvolt = <2800000>;
69 samsung,ext-control-gpios = <&gpk0 2 0>;
73 The regulator constraints inside the regulator nodes use the standard regulator
74 bindings which are documented elsewhere.
76 The following are the names of the regulators that the s2mps11 pmic block
77 supports. Note: The 'n' in LDOn and BUCKn represents the LDO or BUCK number
78 as per the datasheet of s2mps11.
81 - valid values for n are:
84 - Example: LDO1, LD02, LDO28
86 - valid values for n are:
89 - Example: BUCK1, BUCK2, BUCK9
94 compatible = "samsung,s2mps11-pmic";
98 compatible = "samsung,s2mps11-clk";
100 clock-output-names = "xx", "yy", "zz";
105 regulator-name = "VDD_ABB_3.3V";
106 regulator-min-microvolt = <3300000>;
107 regulator-max-microvolt = <3300000>;
111 regulator-name = "VDD_ALIVE_1.1V";
112 regulator-min-microvolt = <1100000>;
113 regulator-max-microvolt = <1100000>;
118 regulator-name = "vdd_mif";
119 regulator-min-microvolt = <950000>;
120 regulator-max-microvolt = <1350000>;
126 regulator-name = "vdd_arm";
127 regulator-min-microvolt = <950000>;
128 regulator-max-microvolt = <1350000>;
131 regulator-ramp-delay = <50000>;